-84=4(1-b)+8

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Solution for -84=4(1-b)+8 equation:


Simplifying
-84 = 4(1 + -1b) + 8
-84 = (1 * 4 + -1b * 4) + 8
-84 = (4 + -4b) + 8

Reorder the terms:
-84 = 4 + 8 + -4b

Combine like terms: 4 + 8 = 12
-84 = 12 + -4b

Solving
-84 = 12 + -4b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '4b' to each side of the equation.
-84 + 4b = 12 + -4b + 4b

Combine like terms: -4b + 4b = 0
-84 + 4b = 12 + 0
-84 + 4b = 12

Add '84' to each side of the equation.
-84 + 84 + 4b = 12 + 84

Combine like terms: -84 + 84 = 0
0 + 4b = 12 + 84
4b = 12 + 84

Combine like terms: 12 + 84 = 96
4b = 96

Divide each side by '4'.
b = 24

Simplifying
b = 24

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